Electronics Protection - January/February 2012 - (Page 18)

EMI/EMC/ESD New CMT-8100 Series Common Mode Inductors Offers EMI Suppression With advanced magnetic designed to eliminate common noise to all lines in power supply designs, the new CMT8100 series common mode inductors from Triad Magnetics feature rugged construction and materials for hightemperature applications in demanding electronics operating environments. CMT-8100 series inductors are used in various types of power supplies to eliminate noise common to all lines. They offer EMI suppression over a wide frequency spectrum and a high current capacity. Meeting VDE, IEC, UL and CSA requirements, they minimize AC line transmitted interference often created by high frequency switching power supplies. Normally placed close to the input power source, the compact CMT-8100 series inductors are constructed with reliable UL rated materials. CMT-8100 series Inductors feature high dielectric strength of 1,500 VRMS between windings. They operate at a temperature range of -55° to 105°C, with the rated current yielding a temperature rise of approximately 35°C. Inductors in the series offer a minimum inductance per winding ranging from 1 to 50 mH, a current rating ranging from 1.7 to 20 amps and a DCR range from 0.006 to 0.45 Ω. The CMT-8100 series inductors feature a toroidal construction with through-hole mounting. They come in rectangular packages ranging from 0.76 by 0.425 inch to 1.7 by 0.9 inch max with height ranging from 0.90 to 1.65 inch depending on the specific model. By setting the relay closing or opening time with the ESD simulator’s touch panel, users can monitor all three independent EUT discharge time segments. The segments are defined into three categories, T1, T2 and T3. During T1, the ESD pulse energy is maintained or bleeds off from the EUT within the context of an ordinary discharge event. The discharge relay closes in order to remove the residual charge once the preselected time expires. T2 defines how long the complete discharge phase should last, determined by the environment, the EUT’s design and the test procedure being performed. Segment T3 is when the discharge path relay opens. This period may be used to verify EUT’s function. Once the time has been completed, the cycle begins again. AVX Expands AntennaGuard Series with 0603 Multilayer Varistor to Provide Fast EDS Response Teseq Offers New ESD Simulator with Built-In Discharge Relay Teseq, Inc. has introduced the NSG 438A, a new ESD simulator that includes an integrated discharge relay circuit to dissipate residual voltage in conventional ESD testing and ungrounded EUT applications. The relay in the simulator provides unique controlled and reproducible discharge and observation time periods along with a discharge operation that is programmable in three separate time segments. It can be retrofitted into any existing Teseq NSG 438 and NSG 439 as well. By connecting a 1 M ohm resistor from the EUT to ground for a controlled time segment that dissipates the residual voltage, the NSG 438A added flexibility and reproducibility for EMC testing. The IEC EN6100-4-2-compliant unit makes discharging EUTs safe and efficient, while comprehensively fulfilling many automotive, household and industry test standard requirements including ISO 10605. Teseq’s ESD simulator offers flexible control parameters for both the built-in and external EUT discharging circuit. It features three freely programmable time parameters that allow the charge holding time to be precisely defined. The operator can set the discharge cycle time and the associated repetition intervals of the ESD pulses so that any residual voltage is guaranteed to be removed from the EUT. The sum of all three time segments equals the pulse repetition rate, an adjustable rate ranging from 0.1 seconds to 99 seconds in intervals of 0.1 seconds. 18 AVX Corp. has expanded is automotive multilayer varistor (MLV) product offering to include an ultra-low capacitance 0603 device that provides sub-1nS response to ESD strikes. The AEC Q200-qualified automotive AntennaGuard series MLV devices deliver low insertion loss, low leakage current and added reliability compared to diode options. These features, combined with size advantages and bi-directional protection, make the AntennaGuard Series well suited for automotive applications including RF circuits, sensors, GPS antenna and high-speed signal transmission lines. “The AntennaGuard MLV series offers our customers fast ESD response,” said Jeremiah Woods, global marketing manager for circuit protection, AVX Corp. “The AntennaGuard series also minimizes the parasitic capacitance and signal distortion, maximizing the signal strength and speed.” Meeting 27.5 VDC jump start requirements, the AntennaGuard MLV series provides an ESD rating of 25 kV. The low profile 0603 MLV features a fast response time to ESD and can withstand successive 1 k strikes at 8 kV (IEC 61000-4-2). Littelfuse Introduces the SP3012 Series TVS Diode Arrays for Protection of USB 3.0 Ports Littelfuse, Inc. has made an addition to its line with the SP3012 series, expanding its range of TVS Diode Arrays (SPA family) for ESD protection of high-speed ports such as USB 3.0. The SP3012 series offers a low loading of capacitance of 0.5pF while providing ESD protection of ±12 kV, exceeding the maximum level specified in the IEC61000-4-2 international standard. Additionally, it provides added clamping performance due to its low dynamic resistance of 0.4Ω, which reduces the peak voltage seen by the chipset by as much as 80 percent in some cases when compared with similar competitive products. The SP3012 also benefits the board designer by allowing the traces to be routed directly underneath device simplifying the PCB design. The µDFN-10 package measures only 2.5 by 1.0 by 0.5 mm making it well suited for equipment that uses USB 3.0 such as external hard disk drives, set-top boxes, notebooks, smart phones, digital cameras and MP3/PMP players. January/February 2012 www.ElectronicsProtectionMagazine.com http://www.ElectronicsProtectionMagazine.com

Table of Contents for the Digital Edition of Electronics Protection - January/February 2012

Pentair Technical Products Expands Hoffman Line of Floor-Mount Type 4 Enclosures
A Look Ahead to 2012: The New UL 50 12th Edition Standard for Electrical Enclosures
Extending the Life of Electronics
Energy Management Using Molded Polyurethane Foam Inserts
Tools for Custom Connector and Cable Solutions
PowerSkin Unveils Battery-Boosting Skin for HTC Amaze 4G
Emerson Network Power Introduces the DCF Optimized Rack System
Littelfuse Introduces the SP3012 Series TVS Diode Arrays for Protection of USB 3.0 Ports
Schneider Electric’s Cooling Solution Portfolio Brings Efficiency, Flexibility and Reliability to Data Center Cooling
Eaton’s 9E UPS Delivers Simple Power Management for Complex IT Environments
PEM C.A.P.S. Captive Panel Screws Offered in Three Mounting Styles26
Industry News
Calendar of Events

Electronics Protection - January/February 2012